36 votes

Safe for cats to drink from the aquarium?

This sounds like undesirable behaviour to me. Here are the main problems in my mind: The cat could fall into the tank, damage the terrapin or tank, splash water on an electrical appliance, etc. ...
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  • 5,124
17 votes

Safe for cats to drink from the aquarium?

The cat might also like the taste of the water. Some animals are quite the connoisseurs. My dog prefers to drink "old" water from a big basin standing outside, one cat enjoys licking up the ...
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  • 28.6k
15 votes

Safe for cats to drink from the aquarium?

They sell fountains for cats. Basically, it's a water bowl (or basin) for the cat to drink from. The bowl is hooked up to a circulating system that keeps the water flowing. This is why your cat is ...
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  • 251
12 votes

Aquarium water becomes overly acidic very quickly

John Cavan's advice is good. Some additional advice that I learned the hard way after many years of owning 80 and 300 litre freshwater tanks: If you don't have a working understanding of pH, it is ...
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9 votes
Accepted

How can I reduce my need to do a water change on my turtle's habitat?

There are a few ways to reduce the frequency of water changes for your turtle. Just keep in mind there is no running away from water changes. Have an efficient biological filter: This very obvious ...
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  • 2,452
8 votes
Accepted

Why does the colour of Neon Tetras fade when they are resting?

Fish have cells called chromatophores that produce the pigments that give coloration or reflect light. The colour of a fish is determined in part by which pigments are in the cells (there are several ...
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8 votes
Accepted

What is this parasite?

Looks like a damselfly larvae to me, which isn't actually a parasite. It is, however, carnivorous... If your fish were larger, this larvae could have turned into food for them, but not in this case ...
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  • 20.3k
8 votes

What animal can be kept in a tank just under 3 gallons?

It is very hard to get a small tank to be in biological balance and to keep the water quality good, so I suggest you use this tank only for treating your fish with medication. This can be helpful if ...
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  • 18.8k
7 votes
Accepted

Is there a way to test the amount of dissolved oxygen in a tank?

You can buy a dissolved oxygen meter, but they'll generally start in the US$200 to US$400 range, and a suitable one I believe runs closer to US$500-600. Not exactly an everyday piece of equipment for ...
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7 votes
Accepted

Best way to adjust fish tank water chemistry

Firstly, I'll go for my old refrain "consistency is key". It's better to have consistent water parameters than changing them continually to 'chase the perfect conditions'. Firstly, your nitrite ...
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  • 5,124
6 votes

Aquarium water becomes overly acidic very quickly

The appropriate pH level of the water does vary a bit by fish, but too acidic can definitely kill them. Any change in pH levels that you want to introduce should be done gradually to avoid a shock to ...
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  • 20.3k
6 votes

Platy fish pregnant

Here is a picture showing the difference in fin shape between a male and female Platy. Usually, when a female is about to give birth, her stomach becomes slightly square as the babies shift position, ...
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  • 4,474
6 votes
Accepted

What are normal pH fluctuations, and what could be causing extreme fluctuations?

The pH should not change more than 0,2 during 24 hours. If it is more, it can stress your fish. The goal is to have a neutral pH of 7,0 for most fish, but this is very dependent on the type of fish ...
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  • 18.8k
5 votes
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Will neon tetras eat ghost shrimp babies?

Neon tetras will indeed eat baby shrimp. So they can be used for population control. But keep in mind that you do have to try to keep some of the babies alive. Otherwise you might end up without any ...
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  • 1,285
5 votes
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Why do my Glofish Skirt tetras stay on surface after 30% water change?

When fish goes to the surface of the water there is some thing wrong, like the lack of oxygen or the presence of poisonous substances in the water. The water test you are using is not reliable and it ...
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  • 18.8k
5 votes

What the best way to get water up to temperature for a water change?

One way to do this is to get an extra aquarium heater and a large container. Set the heater to the same temperature as your tank and let the water slowly heat up overnight. By doing it this way, you ...
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  • 18.8k
5 votes

Are there any species of turtles that won't eat fish?

It will be difficult but not impossible to find a turtle which fits your needs. There are some main factors you need to focus on: temperature and water quality. The temperature will be important for ...
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  • 5,627
5 votes

Can't reduce my nitrite/nitrate levels, any help appreciated!

The first thing you need to do is to add some aquarium salt, this is done to counteract the effect of the nitrite on your fish' gills. The aquarium salt concentration to use is 0,3%. Do water changes ...
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  • 18.8k
4 votes

Aquarium water becomes overly acidic very quickly

The info you've been given in the previous answers is good. Water that has a decent buffering capacity (generally lots of carbonates) will be more resistant to pH fluctuations than water that does not....
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  • 2,333
4 votes
Accepted

Why is there no such thing as a "Saltwater Dip"?

The reason for not giving freshwater fish a salt water dip is this: the salt water is dangerous on a cellular level for the fish due to the change of the osmotic pressure in the cells. Here is the ...
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  • 18.8k
4 votes

Why is there no such thing as a "Saltwater Dip"?

The problem with treating saltwater fish is that the medicines that will kill the microorganisms that are harming the fish will also kill the microorganisms that are helpful to the tank (e.g. the ones ...
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  • 15.5k
4 votes

How can I reduce aggressive fin-nipping from serpae tetras?

I have 8 serpeas in a 5 gallon tank. At first I had 4 and then they were very aggressive. Then when I added 4 more, it was only one that was aggressive. When I removed him, none of the others where ...
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  • 41
4 votes

Cooling a goldfish tank during summer

Ice cubes are a good solution. I live in India where the temperatures go above 40 degrees Celsius for about 4 months of the year. Ice Cubes are what keep my fish alive. During these months my fishes ...
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  • 41
4 votes

Cooling a goldfish tank during summer

I have had the same issue last couple of years. I thought instead of making icecubes and treating etc also adding more water to the tank, I filled three 2ltr water-bottles and froze. No worries for ...
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  • 41
4 votes

What, exactly, is "ich"?

Spidercat outlined some good points, since the Ichthyophthirius multifiliis parasite is a very popular issue in aquariums i feel like adding my personal experiences as well. Causes for an outbreak: ...
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  • 141
4 votes

How can I reduce aggressive fin-nipping from serpae tetras?

Serpae tetras tend to be less aggressive if kept in a larger group, like more than 6-8. This does not ensure the occasional nip at a peaceful cory. Kindly do a bit of research before grouping together ...
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  • 399
4 votes

High nitrate level in tap water

First things first: your tank is not ready to house fish. When setting up a new tank, you need to cycle the water for a few weeks (typically a month or two) so beneficial bacteria can start to grow. ...
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  • 352
4 votes
Accepted

Red algae in my tank

Here's an update on my research and how it went in my tank. I searched many sources for the cause of those algae and how to kill them. It was suggested to me that red algae appear in high pH water, ...
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  • 1,027
4 votes

How to get cristal clear water in an aquarium?

Good mechanical filtration is the primary method. This can be accomplished using a number of methods. In freshwater, a canister or hang on back filter running filter floss or another media that (...
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  • 3,073
4 votes

Sea Monkeys air pump

You should be able to use any aquarium air pump, but most likely you will want a very small one. There's a number of online pet stores or your local big box or smaller local fish stores will carry ...
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  • 3,073

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